Promotions: It’s Blue Jays Weekend. The first 3,000 fans through the gates receive a Marcus Stroman bobble head. The Bisons will wear Toronto-style, baby-blue throwback uniforms. On Sunday, former Blue Jays stars Jesse Barfield and Devon White will sign autographs from noon to 1:30 p.m. First pitch is 1:05 p.m. The first 3,000 fans will get a Blue Jays pennant.

Starting pitchers: Scott Diamond (3-3, 2.39) will pitch for Buffalo against Sean O’Sullivan (2-2, 3.00). Diamond, 29, is a left-hander from Guelph, Ont., who has a good curve ball and outstanding change-up. He grew up a Jays fan an hour from SkyDome and had a Jays belt as a high-schooler. O’Sullivan is back with Pawtucket after making three appearances (two starts) with the Boston Red sox. He’s 28 and he has played in 69 major league games over parts of seven seasons.

Bisons Prospects: Andy Burns started the year ranked 27th among Blue Jays prospects by Baseball America. Outfielder Dalton Pompey is a 23-year-old with speed who made the Blue Jays roster out of spring training in 2015. As long as his defense progresses, he should become a big-league starter.

Big-time slump: Pawtucket’s Devon Marrero is in the middle of a miserable slump. He’s 4 of his last 42 (.095) and he’s hitting .193 for the season. He got the night off Friday.

Boles in Buffalo: Pawtucket’s manager, Kevin Boles, is the son of former Bisons manager John Boles, who directed the Herd in the American Association in 1985. He later served as manager of the Florida Marlins from 1996 to 2001 and since has had a long front-office career. He’s currently a senior advisor to Royals general manager Dayton Moore. Kevin Boles got thrown out of Friday’s game for arguing a double-play call against his team in the eighth inning.

WCC Race: Big news in the mascot race. Atomic is 19-0 this year, but he was given a three-game suspension by Buster Bison Friday for using an illegal condiment (one not from race sponsor 716 Restaurant). He was sent to the “deep fryer” just before the race began. Cheese won the race over Wing and Celery.

The homestand: The Bisons and PawSox meet again at 1:05 p.m. Sunday.

Tickets: $11-13, bisons.com, Coca-Cola Field Box Office.

Mark Gaughan – Mark Gaughan has been a sports writer at The Buffalo News for 35 years. He covers the Bills and the NFL and is a past president of the Pro Football Writers of America, as well as a past selector for Pro Football Hall of Fame.